Zero-bias transport anomaly in metallic nanobridges: Magnetic field dependence and universal conductance fluctuations
arXiv:cond-mat/0007333 · doi:10.1007/978-94-010-0427-5_6
Abstract
We present data of transport measurements through a metallic nanobridge exhibiting diffusive electron transport. A logarithmic temperature dependence and a zero-bias anomaly in the differential conductance are observed, independent of magnetic field. The data can be described by a single scaling law. The theory of electron-electron interaction in disordered systems, adapted to the case of finite-size systems in non-equilibrium, yields quantitative agreement with experiment. Measurements of universal conductance functuations support the assumptions of the theory about the electronic phase coherence.
11 pages, 7 figures. Invited talk, NATO Adv. Research Workshop on "Size dependent magnetic scattering", Pecs, Hungary, May 18 - June 1, 2000